http://books.google.com.ph/books?id=VqFsFMzezR4C&pg=PA122&dq=theseus+citizenship&hl=en&ei=fopDTNufEYiyceedtMEP&sa=X&oi=book_result&ct=result&resnum=6&ved=0CD8Q6AEwBQ#v=onepage&q=theseus%20citizenship&f=false
The Theseus natural born citizen link. Regret the delay.